Papers by Keyword: Thick Wall Cylinder

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Authors: Hong Wang, Ming Yu, Yu Xian Zhang, Miao Liu, Bing Bing Ye, Li Fu Wang, Fang Yao
Abstract: Based on the relation between the elastic disable pressure of the cylinder and the limit of yielding in material according to the elastic disable rule, a laboratorial method of determining elastic disable pressure of thick wall cylinder is designed and a set of experimental data are gained by the method. The elastic disable pressure of the cylinder is gained by analyzing the experimental data. The laboratorial method has a good reliability as the error between the experimental value and the theoretical value is small.
267
Authors: P. Alinezhad, R. Bihamta
Abstract: Swage autofrettage is one of the methods used for increasing life time of tubes and thick wall cylinders under the dynamic loading condition. In this paper swage autofrettage process of thick walled tubes are simulated using ABAQUS commercial code and effect of tool design on the residual stress distribution are investigated. For validating numerical results some experiments were performed and results of experimental and numerical methods showed good agreement with each others.
2206
Authors: M. Abdul Razzaq, Ahmad Kamal Ariffin, Shahrum Abdullah, Z. Sajuri, A.E. Ismail, Azli Ariffin
Abstract: The life prediction information is useful for improving the component design methodology at the early developing stage. Many thick cylinders are subjected to complex cyclic loading spectrum ranging from small vibration to large load induction. This paper presents modeling of fatigue crack growth behavior in thick wall cylinder for outer surface cracked pipe subjected to internal pressure. There are many factors affecting fatigue crack growth such as; crack length, orientation of crack, thickens of the cylinder and the load ratio. Fatigue crack growth as consequence of service loads depends on many different contributing factors. With the help of a simulation fatigue crack growth in three-dimensional structures can either be predicted or explain for already existing failures. The simulation results showed that, more studies on the thick wall cylinder structure need to be performed in order to obtain more accurate fatigue life.
1337
Authors: Babs Mufutau Oyeneyin, Babatunde Moriwawon
Abstract: Development of appropriate strategy for the management of reservoirs with sanding problems is rather complex and requires an integrated approach to finding the optimum solution to solving the problem. This requires integration of key aspects of reservoir characterisation, drilling, completion and production technologies including sand tolerances (Seabed wellhead/flow lines, topside facilities. Providing an accurate forecast of the tolerance depends on accurate prediction of sand failure and the corresponding volume of produced sand. This is a transient phenomena further complicated by gas reservoir fluid flow. In this paper the results of a comprehensive Thick Wall Cylinder[TWC] experimental sand production studies carried out on synthetic sandstones are presented. The sand production prediction model for liquid flow are further calibrated and upscaled with field data for gas reservoirs. The prediction model developed is further validated with independent field data with good results. The results represent a first for sand production forecast for gas reservoirs. Mitigation of sanding requires reliable sanding prediction, precise well design, accurate technology selection as well as optimum completion strategy.
466
Authors: Hong Wang, Fang Yao, Li Fu Wang
Abstract: Based on the relation between the incipient yield pressure and the limit of yielding in cylinder according to the elastic disabled rule, a laboratorial method of determining limit of yielding of material is designed and a set of experimental data were gained by the method. The incipient yield pressure of the cylinder is gained by analyzing the experimental data, and then the limit of yielding is gained. The laboratorial method has a good reliability as the experimental value has a little error to the theory value. It has a definite engineering signification and theory value to research the mechanical capability of material and the disabled rule of high pressure vessel.
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